sci.physics.relativity

On Feb 29, 10:00=A0am, Pentcho Valev wrote:
> /opinions/2008/02/28/brian-greene-time-oped-time08-cx=

> Brian Greene: "By 1915, with his "General Theory of Relativity,"
> Einstein took these realizations one step further, concluding that
> something similar happens in a gravitational field. He figured out
> that the stronger the gravity you experience, the slower time elapses.
> After synchronizing our watches, were I to stay in the lobby of the
> Empire State Building while you went sightseeing on the observation
> deck, I would experience stronger gravity (being closer to Earth) and
> according to Einstein, when we rejoin, my watch would be behind yours.
> The effect would be incredibly small, since the difference in gravity
> you and I would experience is trifling."
>
> Silly Brian does not even understand that the idiocy called
> "gravitational time dilation", as defined by his cleverer brothers,
> depends on the GRAVITATIONAL POTENTIAL difference between "you and
> me", not on "the difference in gravity you and I would experience".

Silly Brian is even clearer here:

/gst/?res=3D9A05EED81E3EF932A35752C0A96=
29C8B63
Brian Greene: "In the early part of the 20th century, however, Albert
Einstein saw through nature's Newtonian facade and revealed that the
passage of time depends on circumstance and environment. He showed
that the wristwatches worn by two individuals moving relative to one
another, or EXPERIENCING DIFFERENT GRAVITATIONAL FIELDS, tick off time
at different rates."

Pentcho Valev
pvalev@